CVE-2011-0977

CVE-2011-0977 is a critical-severity vulnerability in Microsoft Excel with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 32% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-399.

Key facts

Description

Use-after-free vulnerability in Microsoft Office XP SP3, Office 2003 SP3, Office 2007 SP2, Office 2004 and 2008 for Mac, and Open XML File Format Converter for Mac allows remote attackers to execute arbitrary code via malformed shape data in the Office drawing file format, aka "Microsoft Office Graphic Object Dereferencing Vulnerability."

Frequently asked questions

What is CVE-2011-0977?
Use-after-free vulnerability in Microsoft Office XP SP3, Office 2003 SP3, Office 2007 SP2, Office 2004 and 2008 for Mac, and Open XML File Format Converter for Mac allows remote attackers to execute arbitrary code via malformed shape data in the Office drawing file format, aka "Microsoft Office Graphic Object Dereferencing Vulnerability."
How severe is CVE-2011-0977?
CVE-2011-0977 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2011-0977 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 32% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0977?
CVE-2011-0977 affects Microsoft Excel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-0977?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2011-0977 published?
CVE-2011-0977 was published on 2011-02-10 and last updated on 2026-06-16.

References

Affected products (1)

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